Stop mechanism for dispensing-pumps.



L. E. BAKER. STOP MECHANISM FOR DISPENSING PUMPS.

I S APPLICATION FILED FEB. 26. I917. 1,286,201. Patented De0.3, 1918.

4 SHEETSSHEEI l- WITNESSES: [NVEN 70k.

ATTORNEY WJTNESS S, TVVENTOR.

L. E. BAKER.

STOP MECHANISM FOR DISPENSING PUMPS. APPLICATION FILED FEB. 26. I917. 1,286,201, Patented Dec. 3, 1918.

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it L25 l: I s a; i? i 25\ l I II l 7 9 6 BY ATTORNEY L. E. BAKER.

STOP MECHANISM FOR DISPENSING PUMPS.

APPLICATION FILED FB.26. I917.

1,286,201 Patented Dec. 3, 1918.

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C lfllllllllllllllllll W1TNESSES QM INVENTOR.

ATTORNEY UNITED STATES PATENT OFFICE.

LINNAEUS E. BAKER, OF FORT WAYNE, INDIANA, ASSIGNOR TO WAYNE OIL TANK AND PUMP COMPANY, A CORPORATION OF INDIANA.

STOP MECHANISM FOR DISPENSING-PUMPS.

Specification of Letters Patent.

Patented Dec. 3, 1918.

Application flied February 26, 1917. Serial No. 160,975.

p the object thereof is to provide means that may be conveniently manipulated which will arrest the pump in its action at various stages selectively, and which will show the stage at which the movement of the pump will be arrested when actuated.

Another object is to provide conveniently adjustable means for limiting the action of the various intermediate members. The invention pertains particularly to that class of pumps ordinarily employed in dispensing ,oils'and which are devised so as to dischar e upon each cycle of movement a definitey predetermined quantity of fluid, or instead, a definitely predetermined fractional part thereof accordingly as theapparatus is set.

The objects of the invention are accomplished by the construction illustrated in the accompanying drawings, in which Figure 1 1s aside elevation,'partially in section showing the actuating mechanism and a portion ofa pump cylinder, and also a stop mechanism; a

Fig. 2 is a front elevation projected from Fig. 1;

ig. 3 is an enlarged detailed view of the actuating mechanism of the pump and the mechanism for arresting the movement of the rack, the view being partially vertical section;

Fig. 4 is a detail view showing a vertical section of Fig. 3 on the line 02-;

Fig. 5 is a front elevation of the upper part of the apparatus drawn upon the same scale as Fig. 4;

Fig. 6 is a vertical section of Fig. 3 on the line 31-;

Fig. 7 is a planview of the apparatus partially in transverse section; and

Fig. 8 is a top plan view of the apparatus.

Similar characters of reference indicate -openin correspondin parts throughout the various views and re erring now to the same:

1 is a pump having a pump-rod (2). 3 is a rack fixed upon the pump-rod and which is engaged and actuated by a pinion 1) that is xed upon a drive-shaft (5), the latter having a' crank (6), fixed thereon for actuating the same.- The rackand shaft are mounted in a standard (7) that surmounts the pump (1) to which it is fixed and receives support also from the discharge pipe (8) of the pump.

The rack has vertical flanges (9) adapted to slide in guides (10) that extend inwardly from the opposite walls of the standard. The reciprocation of the rack is effected. by the operation of the crank through the medium of the shaft and pinion, and the down- Wa d strokeof the rack is limited by a washer (l1) fixed at the upper end thereof and which comes into contact with the top of the standard. The rack has also a series of projecting lugs' (12), (13) and (14:) respectively arranged in different vertical planes. I

U on the transverse shaft (15) fixed in the rame are ivotally mounted. a series of intermediate ti ting members (16), (17) and (18) respectively. Each member has a pendant lug (19) adapted to bear against a block (20) upon the interior of the standard when the corresponding member is in inoperative position, and the inner end of each member extends in the same vertical plane as the correspondin lugs (12), (13) and (14) on the rack. he outer ends of the intermediate members project through an (21) made in the standard and extend eyond the outer face thereof.

Beneath the intermediate members is pivotally mounted a latch (22) having an integral trigger (23) that extends through an opening (24) in the standard and projects beyond the outer face thereof. The latch (22) tends to remain in upright position owing to the weight of the trigger, and is made of sufiioient breadth as to be engaged by the pendant lug of any of the intermediate members and orm a rest therefor when adjusted to operative position. When the trigger (23) is lifted the latch becomes moved from engagement with any of the the screw to pendant lugs that may be resting thereon whereupon the corresponding intermediate members gravitate to normal position with their pendant lugs resting against the block (20). Also, When any of the intermediate members are shifted to operating position by depressing the outer extending end thereof,

its pendant lug will come into contact with the adjacent face'of the latch and move it out of the path of the lug of any other intermediate member that may be resting there-.

on, so that the latter member may gravitate to its normal position. When the actuated intermedlate member completes its move--' ment, its lug (19) is moved to a position beyond the end of the latch so that the latter automatically swings, to its normal or sustaining position and the actuated member will then rest With its lug bearing upon the latch. When thus positioned the intermediate member will become engaged'and lifted by the corresponding lug on the rack as the latter is raised.

A series of set-screws (25) extend through the top of the standard over'the correspond.

ing inner ends of the intermediate members and serve as adjustable stops to limit: the upward movement thereof. A keeper (26) is secured to the standard by means -of a screw (27) and is shaped to fit the heads of the screws (25) to prevent their turning. Openings (:28) are also made in the keeper for applying a seal (31) through the slot of prevent its unauthorized removal.

The lowermost lug (12) on the rack X- tends sufliciently as to engage the inner end of the intermediate member (16), so that as the upper stroke of the rack is completed the intermediate member will become cngaged by the lug and lifted into contact with the corresponding adjustable stop, thus effecting the limitation in the upward stroke of the rack. The lugs and (14) however, do not extend sufficiently to engage their corresponding intermediate members Whenthe latter are in inoperative position and move past the same as the rack is raised. However. in theevent, any of the intermediate members is shifted into operative position its inner e'nd will extend into the path of the corresponding lug on the rack and will become lifted thereby into contact with the corresponding adjustable stop, and the upward movement of the rack Will be arrested at the corresponding stage.

It will thus appear that in operating the pump its stroke will become more or less limited accordingly as the intermediate members are manipulated, with a consequent variation in the amount of liquid expelled:

. by the pump.

Tpon the standard at a point above the extending ends of the n'itermediatc members is fixed a plate (29) bearing indicating characters (30) respectively positioned to correspond With the projecting ends of the intermediate members, and which signify corresponding quantities of liquid to be discharged by the pump accordingly as the intermediate members are used in the operation.

downwardly upon its projecting end. The

latch 22 engages. beneath the-pendant lug of the member and sustains it in position during the operation of the pump. The amount of liquid discharged by the pump during its operationwill vary according to which of the intermediate members is set into operating position. For instance:

- When the member 16 is used, the full discharge of the pump-Will be effected, and one half or one fourth of the full discharge Will result respectively, When the members 17 or 18 is used.

What I claim is 1. In apparatus of tlie'class described, a pump including a pump-rod and standard; a rack fixed on the pump-rod and having a series of projecting lugs'arranged respectively in diiferent vertical planes; means for reciprocatingthe rack; a series of intermediate tilting members mounted in the stand ard and each extending in a vertical plane corresponding With the respective projections on therack and being severally adapted to be engaged and lifted thereby by the corresponding lug When adjusted to operative position; a latch having a trigger for actuating-it and being adapted to support any of the intermediate members when adjusted to operative position; and a series of adjustable stops in the standard adapted to limit respectively the'upward travel of the 110 intermediate members.

2. In apparatus of the class described, a pumping mechanism including a rack having a series of projecting lugs arranged respectively in different vertical planes; a series 1 5 of adjustable stops; a series of intermediate members adapted to be moved respectively into the paths of the corresponding lugs on the rack-so as to be engaged thereby and lifted into contact With the corresponding 1 20 stops; and a latch for supporting said stops when moved into operative position.

3. In apparatus of the class described, a pumping mechanism including a rack having a series of differently positioned lugs and that extend respectively in different vertical planes; a series of movable intermediate members adapted to be severally shifted into the corresponding paths of the lugs on the rack and to be engaged and lifted 13o thereby respectively; a series of adjustable stops positioned for the limitation of the upward movements of the stops respectively; and a latch for sustaining the intermediate members in operative position.

4. In apparatus of the class described, a reciprocating rack having a series of differently positioned lugs; a series of adjustable stops; and a series of members adapted to be moved to positions for engagement with the corresponding lugs on the rack and being adapted also to be lifted thereby into contact respectively .with the corresponding stops and thus limit the movement of the rack accordingly.

5. In apparatus of the class described, a

' reciprocating rack having a series of differently positioned lugs and extending respectively in different vertical planes; a group of adjustable stops, one in each of said planes; a series of members arranged correspondingly in the vertical planes of the lugs on the rack and being adapted to be severally projected to position intervening between the respective lugs and the corresponding stops; and'a latch for Sustaining said members when projected to operative position. 1

6. In apparatus of the class described, a reciprocating rack having a series of differently positioned lugs that travel in diiferent paths; a series of intermediate members adapted to be adjusted into the paths of the lugs correspondingly; a series of adjustable stops for limiting the movement of the intermediate members, each of said members having a pendant lug; and a latch adapted to support any of said members in operating position, said latch being adapted to be shifted from supporting position by the pendant lug of any of said members when the latter is moved to operating position.

7. I11 apparatus of the class described, a reciprocating rack having a series of differently positioned lugs; a series of adjustable stops; a series of intermediate members adapted to be severally moved to corresponding positions between the lugs and stops to thereby limit the movement of the rack; a

latch for supporting said members in actuating position and bemg adapted to be moved from supporting position by any of said members when shifted to actuating position; and a keeper adapted to be sealed and having holding engagement with each of said stops.

8. In apparatus of the class described, a pumping mechanism includin an actuated rack and a standard, the rac having a series of differently positioned lugs; a series of adjustable stops mounted in the standard corresponding with the lugs on the rack; and a series of movable intermediate members adapted to become engaged respectively by the corresponding lugs on the rack and lifted thereby into contact with the corresponding stops accordingly as the members are shifted into actuating position.

9. In an apparatus of the class described, a pumping mechanism including a reciprocating rack and standard, the rack having differently positioned lugs; a series of adj ustable stops in the standard; means ada ted to be moved selectively to positions Eetween the several lugs and corresponding stops and limit the movement of the rack; a keeper for holding all of said stops; and a seal securing the keeper.

10. In apparatus of the class described, a pumping mechanism including a reciprocating rack and standard, the rack having a series of differently positioned lugs, one

of which projects to a greater extent than the others; a series of adjustable stops in the standard corresponding with the lugs; a series of intermediate members limited respectively by the corresponding stops, one of which is adapted normally to become engaged by the said lug of greatest extent, and the others being normally out of the paths of the other corresponding lugs and adapted to be adjustably moved into said paths so as .to become engaged by the latter lugs respectively; and a latch having an extending trigger and sup orting relation with the intermediate mem ers when moved into actuating position. i

In testimony whereof I afiix my signature, in presence of two witnesses.

LINNAEUS E. BAKER.

Witnesses:

O. O. GRIFFIN, E. A. ZERN. 

